A3
Pin #
Function
Description
Signal
Type
Level when
Asserted
Level when
Deasserted
Notes
Applications
22
I SUM3–
Multiple Amplifier
Summing, Amplifier
3
DC
Planned for use in multiple amplifier
configurations - paralleled and run
-
ning Controlled Current Mode
Currently not used.
23
OverLoad
Out
Overload output
(amplifier output is
clipping).
DC
–24V
0V
When amp is normal, this pin is
pulled to –24V through a 47.5K-ohm
resistor; when amp is in Overload
state, this pin is grounded. Do not
exceed 6 milliamps.
Remote Signal of Overload Condition:
LED, when lit,
signals Overload condition. Use a 6mA series resistor
of 4.7K-ohm for LED or OPTO, tie to –24V source (PIN
13).
24
OverVoltage
Out
Overvoltage output
(High AC line
voltage).
DC
–24V
0V
When amp is normal, this pin is
pulled to –24V through a 47.5K-ohm
resistor; when amp is in Overvoltage
state, this pin is grounded. Do not
exceed 6 milliamps.
Remote Signal of Overvoltage Condition:
LED, when
lit, signals Overvoltage condition. Use a 6mA series re
-
sistor of 4.7K-ohm for LED or OPTO, tie to –24V source
(PIN 13).
25
Reset
Reset
DC
–15V
0V
Tie to PIN 13 (–24V dc) and create a
–15V dc source; <2mA required for
reset. Connect the –15V dc source
to PIN 25 (Reset) through a 1K
buffer resistor to reset.
Reset from Standby:
Use a dry contact switch and volt
-
age regulator to return amp to Ready/Run condition after
Over-temperature or Overload conditions. Assert –15V
for at least 100 ms to clear error condition.
Gray shaded areas indicate pin not used / feature not implemented.
Blue shaded areas indicate used only in multi-amplifier systems.
